hi i am quite new to audio amplifiers. I have previously build some guitar pedals and guitar preamp/powers amp.
So now i want to build stereo bi-amp with passive high-mid filter(chip or solid state).
Some this like this.http://www.nmine.com/multiamp.htm

But this schematic is quite unclear to me. Any help will be appreicated. Or can you suggest any similar circuits with pcb layout.